Learn About Trisomy 17 Mosaicism

What is the definition of Trisomy 17 Mosaicism?
Trisomy 17 mosaicism is a chromosomal abnormality in which there are three copies of chromosome 17 in some cells of the body, rather than the usual two copies. It is often incorrectly called trisomy 17 (also referred to as full trisomy 17), which is when three copies of chromosome 17 are present in all cells of the body. Few cases of Trisomy 17 mosaicism have been described, most having been detected during pregnancy through a test called amniocentesis. Because the proportion and location of cells with trisomy 17 differs from case to case, the presence and severity of signs and symptoms may vary significantly from person to person.
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What are the alternative names for Trisomy 17 Mosaicism?
  • Trisomy 17 mosaicism
  • Chromosome 17 duplication
  • Chromosome 17 trisomy
  • Chromosome 17, trisomy
  • Chromosome 17, trisomy mosaicism
  • Trisomy 17
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Published Date: May 02, 2022
Published By: Genetic and Rare Diseases Informnation Center

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